﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ExampleClass05
{
    class Program
    {
        static void Main(string[] args)
        {
                Rectangle recta=new Rectangle (3,4);
                Rectangle rectb=new Rectangle(5,6);
                Console.WriteLine("rect a:{0}", recta.area());
                Console.WriteLine("rect b:{0}", rectb.area());
        }
    }
}
